Rock-drilling machine



(Model.)

J. H. MOGLYNN.

ROCK DRILLING MACHINE. No. 267,441. Patented NOV. 14, 1882..

@Ntra STATES JAMES II. MGGLYNN, OF WILKES-BARR, PENNSYLVANIA.

ROCK-DRILLING MACHINE.

SPECIFICATION forming part of Letters Patent No. 267,441, dated November 14, 1882.

Application filed June 23, 1882. (Model.) I

To all whom t may concern:

Be it known that I, JAMES H. MCGLYNN, a citizen ofthe United States,residing atWilkes- Barre', iu the county of Luzerne and State of Pennsylvania, have invented certain new and useful Improvements in Coal and Rock Drills; an d Ido declare the followingr to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and iigures of reference marked thereon,which form a part ofthis speciiication.

My invention has relation toimprovementsin coal and rock drills; and it consists essentially iu the manner of feeding` and adjusting the drill, and in otherimprovemen ts, as will behereinafter fully described, and specicall y pointed out in the claims.

y In the drawings, Figure l is a side view of my machine. Fig. 2 is a transverse section of saine. Fig. 3 is a detailview showingthefeed mechanism. Fig. et is a sectional view on line .fr a', Fig. 3, and Fig 5 is an end view of thefulcrum or supporting-post, as will be described.

c represents the framing carrying the drill and feed and operating mechanism. It is composed of the side bars, c a', the end bars, a2 a3, and the cross-bar a4, and thecurved bracketa The end bar a3 and cross-bar a4 are provided with suitable bearings for the drillshaft, and the end bar a2 is provided with a socket to receiie the tang ot' the feed-screw, hereinafter described, the socket in bar t2 and the bearings in bars a3 a4 being in line' with each other, as shown in dotted lines, Fig. l.

brepresentsthedrill-shai't. ltisconstructed with a longitudinal groove, b', nearly its full length, and it is journaled in the cross-bar c4 and end bar (t3, and slides through its bearings in the said bars in the operation of the machine, as will he described.

c represents the nut for the feed-screw. It is composed of the thimhle c and the hinged wings o2 c3,which form the s'plit nut. These wings are threaded correspondingly to the threads of the feed-screw. VFrom the wing c I project the lug c4,which is perforated to receive the pin o6, and in the end of a wing, c3, I cut the slot o5. Hence when the parts arein the position shown in Fig. 3 I turn wing c2, bringing the lug ciL through slot c5, and pass pin o6 through perforation in lug c4 above wing c3, se-

curing the Wings together and forming substantially a solid nut. I construct these nuts c with the thimble c', arranged to tit over the end of shaft b, and secure it by set-screw c7, as shown in Figs. 1 and 3, orin any other suitable manner desired, so it may he easily replaced 6o d is the feed-screw. Itis constructed with 6 5 'the tang or shank d and the arm d2'.

The arm d2 is extended from the rear end of screw at right angles thereto, and arranged to engage the arms a of the framing, as shown in Fig. l, and prevent the screws turning. desired this arm may be made separate from screw dand secured thereto by set-screw, or in any other manner desired. tended beyond the joint with the arm d2 and in line with the screw, and it is arranged to be seated in the socket formed in end bart/.2. The threads of this screw, it will be understood, correspond to the threads employed in the nut c.

e represents a bevelgear wheel, which is secured on theshaft b by a key which works in 8o the groove b, thus permitting the shaft b to slide through the said gear-wheel while it is lbeing revolved thereby, as will be described.

f represents a bevel-gear wheel, arranged to mesh with wheel e. The shaftf ot'wheelfis 85 journaled in the bracket c5, as shown in Fig. l, and is provided with a crank, f2, whereby motion is given to the drill-shaft.

g represents thedrill, secured in endof shaft b by set-screw g. 71J L are plates or lugs ex- 9o tended from the side arms, a', of frame a, in the same plane with the said frame and in line with cross-bar a4. These lugs arerounded on their outer ends, and they are perforated with openings L h h2 h2, arranged in pairs, as will be 95 described.

t' represents the rule-joint piece. It is composed ofthe parallel jaws t" t" and the rounded shank 2. Thejaws tt" are adapted to tit over the lugs h, as shown in Fig. 2, and they are 10o provided with a pair of openings corresponding to openings through the said lugs. 1.313

When so 7o The tang d is exare pins connected by chains to piece t', and arranged to be passed down through openings in jaws t t" and through the coincident holes in lugs h, as will be described.

j is the supporting-post. It is provided at one end with threads, forming a screw,j, which is screwed into the coal or rock, and this screw is formed with longitudinal channels j, to carry off the slack as the screw is turned into the coal. On the opposite end of the post I form an opening, jg, to receive the shank 'i2 of piece t', as shown in dotted lines, Figs. 1 and 2. j" is a set-screw, arranged to bear through threaded opening in post j against the shank ft2 and secure it in position in the operation ofthe machine, as will be described. This set-screw is provided with alever,j5.

In the operation of my device I screw the supporting postj into the rock or coal near whereitisdesired todrill. rlhispostisscrewed suliciently far into the coal or rock to provide a firm support for the .drill-frame. The shank ofjoint-piece t' is then placed in openingj and adjusted to the proper angle, and there sccnred by screwj". The lug 71 on frame a is then placed between the jaws t" t, and there secured by pins i3, passed through the holes in the jaws t" and through the holes h li or h2 h2, according as it is desired to adjust the frame a.. Thus it will be seen the framing is easily adjusted, so that holes can be bored at any angle up or down without changing the supporting-post; also, that by changing the pins in the rule-joint the drill can be setin position to bore a hole at any desired angle or place, and that by reversing the rule-joint piece in the supporting -post the drill can be reversed, thus making it a right or left machine at will.

When the several parts of the drill are in the position shown in Fig. 1, and it is desired to drill a hole, the crank f2 is revolved to the right, turning the wheelsfe and shaft b, and the shaft having the nut c, turning on screw d, is fed with the drill into the rock or coal, the shaft sliding through the wheel c by its connection therewith by means of key workingin groove b, as described. \Vhen the hole has been drilled a sufficient depth, or it is desired for any other reason to withdraw the drill, the motion of the crank is reversed, carrying the arm d? of feed-screw into position shown in detted lilies, Fig. 1, and the drill is drawn out ofthe hole. When the shaft has been run almost off the feed-screw in drilling a hole, and

it is desired to begin again with a fresh feed, I obviate the necessity of turning the shaft back on the screw d by simply unfastening the wings of nut, turn the wing c3 back, and lift the screw into the position shown in dotted lines, Fig. 4, and push it up into the shaft and draw the shaft back, when the drill is again ready for work. It will be seen, also, that the arm d2 on screw can be adjusted backward or forward, so that the slack in the bored hole can be drawn out by the drill without moving the supporting-post or drill-frame from their positions. My feed-screw, being contained within the hollow shaft, is protected at all times from dust and dirt.

IIa-ving thus described my invention, what I claim, and desire to secure by Letters Patent,

1.4 rIhe combination, substantially as hereinbefore set forth, of the revolving tubular drillshaft having its inner end open, the hinged nut fixed to the open tubular end of and revolving with the drill-shaft, and the stationary feed-screw having one end held in the supporting-fraine and its other end extended through the hinged nut and into the tubular drill-shaft, substantially as set forth.

2. rIlhe combination, substantially as hereinbefore set forth, of the shaft b, carrying the drill and journalcd in bearings in the frame a, the nut c, secured 0n the end of shaftb, and constructed with the hinged wings e2 c3, the

non-rotating feed-screw d,passinginto the shaft i b, and constructed with the tang d', seated in bearings in the end bar of frame a., and means for revolving the shaft b, as set forth.

3. The combination, substantially as hereinbefore set forth, of the frame a., provided with the lugs h h., arranged on the opposite edges thereof, the arch or dome a5, fixed to the frame a, the hollow drill-shaft b, provided with a nut, c, on its open end, the pinion e, sleeved upon the drill-shaft, the gearf,jonrnaled in the dome or arch a5 and meshing with the pinion c, the feed-screw having one of its ends held in the frame c and its other end working in the drillshaft, and means for holding the frame and drill at any desired angle, as set forth.

In testimony whereof' I affix my signature in presence of two witnesses.

JAMES H. MGGLYNN.

Witnesses:

M. E. GAUGHAN, W. S. PARSONS. 

